Installation Instructions Chapter 3

Ripwave Base Station I&C Guide Navini Networks, Inc.
Chapter 3
104 Part #40-00047-07 Rev F v1.0 (TTA)
October 9, 2003
Perform the Calibration Verification Procedure
Base Station Calibration Verification is a set of procedures to verify that the equipment has
passed calibration and that the RF portion of the equipment is operating within acceptable
parameters. The results of the tests should be documented in the Base Station Calibration
Verification Form, P/N 40-00059-00. This form, along with the procedure and form instructions,
may be found in Appendix V.
Single Antenna Test
The object of the RFS Single Antenna Test is to verify the functionality of each antenna element
in the Ripwave Radio Frequency Subsystem (RFS). The 8 antenna elements work together to
create the beamforming that results from using a Smart Antenna - Phased Array technology.
Using 8 combined single antenna elements creates the beamed radiation that is part of what
constitutes the gain of up to 18 dB during transmission of data. In order to verify the correct
beamforming and that each single antenna is working properly, we have to turn off the individual
PA that controls each antenna element, one at a time.
The Single Antenna Test should be performed after completing the Base Station Calibration
Verification procedure. This test is necessary since an equipment calibration does not check the
functionality of the RFS, and the Calibration Verification only searches for losses in the RFS, not
RFS functionality. More specifically, the Single Antenna Test checks the following:
1. Low Noise Amplifier (LNA) at the RFS. LNAs are an integral part of the smart antenna
technology.
2. Power Amplifiers. There is one PA for each antenna element, for a total of 8. Each PA
converts IF to RF and vice versa and amplifies the signal before transmission and after
reception.
3. Modulations. As each antenna element is checked, the variable modulations are checked.
The higher the modulation, the higher the power and the better the data rate. The test
ensures that all modulations possible, i.e., QPSK, 8PSK, and QAM16, are working
properly.
Export BTS Data
Once you complete the calibration verification, export the BTS configuration data to a text file.
This is done by highlighting the specific BTS in the Configuration and Alarms Manager (CAM)
window, and on the Main Menu select File > Export BTS Data. This saves the configuration
information if needed for later retrieval.